OPERATIONS MANAGEMENT (LL)-W/ACCESS
17th Edition
ISBN: 9781260037821
Author: CACHON
Publisher: MCG
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Chapter 9, Problem 3CQ
Summary Introduction
To determine: Whether the given information is true or false.
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Following the announcement of a major quality problem, the share price of a companyfalls substantially. This decrease is a result of assignable cause variation. True or false?a. Trueb. False
Which of the following statements is not true of Quality control?
a.
Quality control aims at detecting defects rather than preventing the defects.
b.
Quality control means the recognition and removal of identifiable causes and defects, and variables from the set standards
c.
The aim of quality control is to provide products which are dependable, satisfactory and economical.
d.
A quality control system is designed to ensure economical production of products of uniform quality which is acceptable to the customer.
Which of the following definitions describes a robust process?a. A process is robust if it can tolerate variation in input and environmental variableswithout producing a defect.b. A process is robust if it has a lot of automation built in.c. A process is robust if it uses control charts.d. A process is robust if its process capability index is greater than 1.
Chapter 9 Solutions
OPERATIONS MANAGEMENT (LL)-W/ACCESS
Ch. 9 - Prob. 1CQCh. 9 - Prob. 2CQCh. 9 - Prob. 3CQCh. 9 - Prob. 4CQCh. 9 - Prob. 5CQCh. 9 - Prob. 6CQCh. 9 - Prob. 7CQCh. 9 - Prob. 8CQCh. 9 - Prob. 9CQCh. 9 - Prob. 10CQ
Ch. 9 - Prob. 11CQCh. 9 - Prob. 12CQCh. 9 - Prob. 13CQCh. 9 - Prob. 14CQCh. 9 - Prob. 15CQCh. 9 - Prob. 16CQCh. 9 - Prob. 17CQCh. 9 - Prob. 18CQCh. 9 - Prob. 1PACh. 9 - Prob. 2PACh. 9 - Prob. 3PACh. 9 - Prob. 4PACh. 9 - Prob. 5PACh. 9 - Prob. 6PACh. 9 - Prob. 7PACh. 9 - Prob. 8PACh. 9 - Prob. 9PACh. 9 - Prob. 10PACh. 9 - Prob. 11PACh. 9 - Prob. 12PACh. 9 - Prob. 1CCh. 9 - Prob. 2C
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- Which of the following is not classified as a data error? a.Respondent errors b.Interviewer errors c.Data analysis errors d.Non-response errors e.Data entry errorsarrow_forwardWhich of the following statements is NOT true about the process capability ratio? a. The process capability ratio is a ratio for determining whether a process meets design specifications. b. The process capability ratio is computed as the difference of the upper and lower specification limits divided by six standard deviations. c. The process capability ratio is a ratio of the specification to the process variation. d. A capable process has a process capability ratio less than one.arrow_forwardWhich of the following statements about Pareto diagrams is correct?a. The Pareto diagram shows the possible root causes of a problem along with the numberof defect occurrences.b. The Pareto diagram shows the process capability index over time.c. The Pareto diagram shows the mean of a random sample at various points in time.d. The Pareto diagram shows a visual representation of binary outcome variables.arrow_forward
- 8 Validity is the most critical criterion and indicates the degree to which an instrument measures what it is supposed to measure. Validity can also be thought of as utility. In other words, validity is the extent to which differences found with a measuring instrument reflect true differences among those being tested. a. False b. Truearrow_forwardA manager wanted to predict how much rework time would result from taking a manufacturing line from producing 8 hours a day to 24 hours a day. The manager carefully analyzed three years of performance from manufacturing lines that operated 8 hours a day to make the prediction. The manager is at risk of making what type of error? a Data overfitting error. b Extrapolation beyond the range error. c Outlier error. d Either a type I or type II error.arrow_forwardWhen performance overrides expectations, the consumer is much delighted Select one: True Falsearrow_forward
- This audit tool is very useful in alerting or identifying any deviations from normal expectations set by management based on planning phase. Group of answer choices Histograms None of the above Control Charts Pareto Charts Check Sheetsarrow_forwardChoose all the answers that correctly explain why an incoming inspection can be safely eliminated by computer makers. SPC provides some assurance that the monitors are roughly uniform in quality. Prior inspection of the monitors saves the computer makers money because they are confident that the SPC of the monitor manufacturer ensures that all of the monitors are of acceptable quality. Assuming that uniform quality is sufficiently high, the purchaser does not need to inspect the monitors as they arrive because SPC has already achieved the goal of that inspection. Assuming that uniform quality is sufficiently high, the purchaser does not need to inspect the monitors as closely as if they had not been previously inspected. SPC provides some assurance that the monitors are absolutely uniform in quality. Prior inspection of the monitors saves the computer makers money because they are confident that the SPC of the monitor manufacturer ensures that most of…arrow_forwardAll of the following costs are likely to decrease as a result of better quality EXCEPT: Question 13Answer A. scrap costs. B. warranty and service costs. C. inspection costs. D. customer dissatisfaction costs. E. maintenance costs.arrow_forward
- True/False The gray scale is an example of achromatic colors that differ by their value or brightness. Made-up refers to prototypes of apparel items. Materials inspection is the same thing as an evaluation of materials performance.arrow_forwardThe director of research and development is testing a new drug. She wants to know if there is evidence at the 0.05 level that the drug stays in the system for more than 399 minutes. For a sample of 81 patients, the mean time the drug stayed in the system was 401 minutes. Assume the standard deviation is known to be 21. Step 1 of 5: Enter the hypotheses: Step 2 of 5: Enter the value of the z test statistic. Round your answer to two decimal places. Step 3 of 5: Specify if the test is one-tailed or two-tailed. Step 4 of 5: Enter the decision rule. Step 5 of 5: Enter the conclusion.arrow_forwardWhich of the following is not a characteristic of nonfinancial performance quality indicators?a. They relate to physical processes and therefore focus attention on precise problem areas in needof attention.b. They can provide immediate feedback on whether quality-improvement efforts have succeededin improving quality.c. They are typically less expensive to obtain compared to cost-of-quality (COQ) data.d. They are predicted by a set of relevant financial indicatorsarrow_forward
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